Björn Töpel cac6b043ce riscv, bpf: Fix potential NULL dereference ...

commit 27de809a3d upstream.

The bpf_jit_binary_free() function requires a non-NULL argument. When
the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps,
jit_data->header will be NULL, which triggers a NULL
dereference. Avoid this by checking the argument, prior calling the
function.

Fixes: ca6cb5447c ("riscv, bpf: Factor common RISC-V JIT code")
Signed-off-by: Björn Töpel <bjorn@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20211028125115.514587-1-bjorn@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-11-02 19:48:21 +01:00

..

bpf_jit_comp32.c

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bpf_jit_comp64.c

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bpf_jit_core.c

riscv, bpf: Fix potential NULL dereference

2021-11-02 19:48:21 +01:00

bpf_jit.h

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Makefile

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